Operating Problems - Alcad GRF-204 Manual Del Usuario

P O R T E R O

OPERATING PROBLEMS

If there is a fault, connect up a single telephone to terminals 1,
2, 3, 4 and to a push button on the entrance panel where the
anomaly is. In this way, you will be able to check whether the
problem is in the entrance panel or in the telephone connections.
Nothing works.
Check the mains voltage in the power supply.
Check that the voltage between
supply is 12 Vac. Check whether there are any short circuits
and fix them. Disconnect the power supply for 1 minute and
then connect it up again.
If it still doesn’t work, disconnect all the power supply V
and terminals, and check that the voltage between
V is 12 Vac, if this is not the case then there may be
something wrong with the power supply.
The card holders do not light up.
Check that the voltage between
supply is 12 Vac. Check that the voltage between 9 and 10
in the audio unit, with the lighting push button activated, is
12 Vac. Check whether the lamp is burnt out.
The lighting push button pilot does not light up.
Check that the voltage between
is 12 Vac. If the voltage is correct, there may be something
wrong with the audio unit.
You cannot hear any telephones from the entrance panel.
Check connections 2 and 3 from the audio unit to all the
telephones. Check the volume control on the panel and the
lighting push button pilot. In multiple access installations,
make certain that connectors 17 and 18 on the panels are
connected up. If you cannot find the fault, there may be
something wrong with the audio unit.
You cannot hear a telephone from the entrance panel.
Check connections 2 and 3 from the telephone to the audio
unit. If you cannot find the fault, there may be something
wrong with the telephone.
You cannot hear an entrance panel on any telephone.
Check connections 2 and 4 from the audio unit to all the
telephones. Check the volume control on the telephones (on
the panel) and the lighting push button pilot. If you cannot
find the fault, there may be something wrong with the audio
unit.
E L E C T R Ó N I C O - D O O R
and V of the power
and V of the power
and V in the audio unit
E N T R Y S Y S T E M S
You cannot hear the entrance panel on a telephone.
Check connections 2 and 4 from the telephone to the audio
unit. If you cannot find the fault, there may be something
wrong with the telephone.
You can hear whistling in the panel. The sound produces
feedback.
Lower the sound level using the volume control on the audio
unit.
The call tone doesn’t ring on any telephone.
Check that the voltage between 2 and 7 in the audio unit,
without pressing the push button, is 14,5 Vdc. Check the
connection between 7 in the audio unit and the push buttons.
and Check connection 2 from the audio unit to the telephones.
If you cannot find the fault, there may be something wrong
with the audio unit.
The call tone doesn’t ring in a telephone.
Check connections 2 and 5 from the telephone to the entrance
panel. Check that the telephone is not off the hook. Check
the push-button connection on the entrance panel. If you
cannot find the fault, there may be something wrong with
telephone or the panel push-button.
You cannot hear the call confirmation on the entrance panel.
Check that you can hear the telephones on the entrance
panel. Check that the call tone rings on the telephones. If
you cannot find the fault, there may be something wrong
with the audio unit.
The electric lock doesn’t work.
Check that the voltage between 1 and 2 in the audio unit,
without pressing the lock release button, is 5 Vdc. Check
that the voltage between 11 and 12 in the audio unit, when
you press the lock release button, is 12 Vac. In multiple
access installations, make certain that connectors 17 and
18 on the panels are connected up. If you cannot find the
fault, the lock may be broken.
In multiple access installation, when you call one of the panels
the rest of the panels in the system are not disabled.
Make certain that connectors 17 and 18 on the panels are
connected up. Check that the voltage between 2 and 17 in
each one of the audio unit is 8 Vdc when you press the push
button on one of the panels. If you cannot find the fault,
there may be something wrong with the audio units.
- P O R T I E R É L E C T R O N I Q U E
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